A system, method and computer program product for online advertising, including providing a branded prefix have a secondary meaning; appending the branded prefix to a dictionary word suffix to form a domain name; and displaying a web page based on the domain name and including one or more web page links. The apparatus of the invention includes an oscillating signal generator that applies an oscillating signal to the electrical conductor under test. Specifically, a node where the one electrode of the capacitor and the gate of the driving transistor are electrically connected to each other in the period is made in a floating state, and the other electrode of the capacitor and the source of the driving transistor are electrically connected to each other. Based on the first comparison result, a second base station is selected, and the mobile device is instructed to switch from communicating wirelessly with the first base station to communicating wirelessly with the second base station.